Subtract 18/40 from 6/12
6/12 - 18/40 is 1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
6/12 = 6 × 10/12 × 10 = 60/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Subtract the two like fractions:
60/120 - 54/120 = 60 - 54/120 = 6/120 - After reducing the fraction, the answer is 1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-36/40 6/24-18/40 6/12-18/80 18/12-18/40 6/12-54/40 6/36-18/40 30/12-18/40 6/12-90/40 6/60-18/40 42/12-18/40 6/84-18/40